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CRITICAL FACTORS
INSTALLING A DH ANTENNA
1. READ INSTRUCTIONS before disassembling the crate.
2. RIBS: Look for color coded dot on the rib. Dots indicate correct order
to assemble panels. Number is stamped in the lip of the antenna too.
3. PILOT HOLE: Locate pilot hole on the ring and antenna. THIS IS
nd
YOUR STARTING POINT! Pilot hole is located on the 2
block from
the left of the weld on the ring from the back view of the antenna.
MATCH mount pilot hole to panel with pilot hole.
4. FINGER TIGHT: Installing the panels to the ring and installing the
ribs on the panel sections. DO NOT OVERTIGHTEN.
5. TIGHTEN DOWN all ribs to become a solid antenna.
(Once all panels installed)
6. STRING THE ANTENNA. Strings should just touch. Adjust the
braces so front surface is exactly flat.
7. TIGHTEN DOWN ALL BOLTS: Ring to antenna.
8. SET FEEDHORN TO EXACT FOCAL LENGTH & TO EXACT
CENTER OF THE ANTENNA. Use a laser tool or cut a piece of wood
to the focal length of your antenna. Feedhorn must be flat to antenna
surface. Please consider feedhorn manufacturer's recommendation. See
"Preparing the Feed Assembly" in manual.
CALL 1-608-326-8406 WITH QUESTIONS
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Summary of Contents for DH AZ-EL
- Page 1 CRITICAL FACTORS INSTALLING A DH ANTENNA 1. READ INSTRUCTIONS before disassembling the crate. 2. RIBS: Look for color coded dot on the rib. Dots indicate correct order to assemble panels. Number is stamped in the lip of the antenna too.
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Page 2: Parts List
Assemble using these instructions. If you have any questions please call 800-627-9443 for help. The AZ-EL Mount is designed to go with the 3.0m, 3.7m, 3.8m, 4.2m* and the 4.5* meter antennas. As all are identical in theory, we will cover the basic installation first PLEASE READ COMPLETE and address each individually as the installation requires. - Page 3 AZ-EL MOUNT Base Post 5.5 Inch O.D. (not included) Page 1...
- Page 4 Engineer to give you an idea of how much steel to use. WE RECOMMEND THAT YOU CHECK WITH A LOCAL ENGINEER TO DETERMINE SOIL TYPE AND BEARING TO VERIFY THAT THIS BASE WILL WORK FOR YOUR LOCALE. With this AZ-EL mount, you have a choice of two different base assemblies.
- Page 5 Assembling the Ring to the Base------ Assembling the AZ-EL Mount is very easy (familiarize yourself with Figure #4), as there are only four parts to put together. First take the base can and set it on the base post. Tighten it with the 3/4”...
- Page 6 IMPORTANT!! If you have purchased a 4 or 8 piece sectional antenna follow the instructions on page ASSEMBLY OF THE ANTENNA 4 and 5. (On Ground: Lift As One Piece Antenna) The antenna will come in 4 or 8 pieces each having a color coded dot on the rib (see FIGURE #5). NOTE: After complete installation you will no longer see the colored dots.
- Page 7 “OPTIONAL ASSEMBLY METHOD” (Install By Sections: Using 2-3 People) Assemble mount , using the elevation tube to place mount in birdbath position. Be sure to tighten the elevation tube and lock the mount with ratchet straps once in birdbath position. (See PHOTO D) Step 1: Install the brace clips to all 8 back braces, using a 3/8”...
- Page 8 Installation Photos: Additional Help for Installing by Sections to the Ring Template Rib Splice Strap Back Brace Brace Clip Continue to page 5 for section by section installation...
- Page 9 “OPTIONAL ASSEMBLY METHOD” (Install By Sections: Using 2-3 People) Assemble mount , using the elevation tube to place mount in birdbath position. Be sure to tighten the elevation tube and lock the mount with ratchet straps once in birdbath position. (See PHOTO D) Step 1: Install the brace clips to all 8 back braces, using a 3/8”...
- Page 10 FIGURE #12. DO NOT OVER TIGHTEN. FIGURE #12 FIGURE #11 BACK VIEW OF 48” RING STD AZ-EL Note: ON A ONE PIECE ANTENNA, THE WELD OF THE ANTENNA IS ALWAYS LINED UP WITH THE BOOM OF THE MOUNT...
- Page 11 Assembling & Installing the Back Brace---- NOTE: 3.0m, 3.7m and 3.8m antenna systems have 15/16” galvanized round tube back braces. 4.2m and 4.5m have square tube back braces. Please refer to mechanical drawing specifications on page 7A. There are eight holes around the rear of the 48" ring to accept the braces. First install the bent tabs. (See FIGURES #14 &...
- Page 12 62.5"= 4.5m 68.5"= 5m 3/8" HOLE 2" 6" 1/2" Back Brace Brace bracket 3/8" x 2" bolt/nut DH SATELLITE P.O. BOX 239 PRAIRIE DU CHIEN, WISCONSIN 53821 PHONE (608) 326-8406 DESCRIPTION: Edge of Antenna BACK BRACES NEW DESIGN DRWG#: DRWN BY: DATE;...
- Page 13 Elevation Fine Tuning------------- The fine tune adjustment for the elevation of the AZ-EL Mount is very simple to operate. First elevate the antenna to the satellite lock the elevation rod down. Tighten the U-...
- Page 14 A DH C14F is supplied as standard unless you have made a request for another style collar. Place the C14F collar or collar supplied on the back of the feedhorn scaler ring. Turn the scaler plate on the feedhorn so that all three holes line up between the slotted holes on the feed collar.
- Page 15 A DH C14F2018 is supplied as standard unless you have made a request for another style collar. Place C14F2018 collar or collar supplied on the back of the feedhorn scaler ring. Turn the scaler plate off the feedhorn so that all three holes line up between the slotted holes on the feed collar.
- Page 16 Heavy Duty Feed Strut________________________ We have developed a new feed strut and collar for the heavier 4 Port Seavey and Chaparral feed assemblies. This utilizes the rectangular aluminum tube for the feed strut. Refer to the drawing on page 11 for the bolt placement of a C14FHD or C24HD. Each strut has 2 ‐ 5/16” x 2 ¼”bolts to attach to the feed collar. Attach one of the angle brackets (2" x 2") to the antenna with the ½” x 3” bolts. Notice that angle brackets have two holes. The top hole is for Seavey (C24HD) and Chaparral (C14FHD) type feeds. Bottom hole isn’t used for 48” rings. Next, attach the base of the strut to the angle brackets with the 5/16 x 1 ½” bolts supplied. Align the feed to point directly at the center of the antenna. Measure the focal length to the front of the scalar rings. (Seavey recommends f/l is measured to front of scalar ring.) (Chaparral measures ¼” inside the wave guide.) Ku Band Feed Assembly----------------------------- When using the Ku only feeds, you will be using the C14F or C14F2018 feed plate and tri‐collar. See Figure 13 and Figure 15 below. First, attach the flat tri‐collar to the feedhorn as follows: attach the first two pieces by using the 8‐32 x 1" screws provided. Now slide the collar onto the feedhorn and add the third piece; tighten evenly. Attach the tri‐collar to the larger horseshoe collar by the 8‐32 x ¾” bolts and nuts; tighten down. You can adjust polarity by loosening these nuts and rotating the feed. Finish by assembling the struts to the feed collar as shown in Figure 14 for C14F feed plate and Figure 16 for C14F2018 feed plate. (Fig#14, Fig#16 shows a single Ku feed inserted in a collar) Figure #13 Figure #15 Figure #14 Figure #16 C14F with Ku tri-collar C14F with single Ku feed C14F2018 with Ku tri-collar C14F2018 with single Ku feed NOTE: New Style Collar C14F2018 Transition Starts April 16th, 2018 Fine Tuning the Antenna-------------------------------- After the assembly is complete, we recommend you "string the antenna." Simply run a string from a back brace ...
- Page 17 This bolt hole not used Antenna 5/16" x 1 1/2" Bolt 2" x 2" Angle Brackets 1/2" x 3" Bolt DH SATELLITE P.O. BOX 239 PRAIRIE DU CHIEN, WISCONSIN 53821 PHONE (608) 326-8406 Top hole is for Chaparral type & Seavy type feed DESCRIPTION: Feed Assembly for 48"...
- Page 18 ADDITIONAL FINE TUNING TECHNIQUES To receive the optimum from your antenna, you must take time to fine tune the antenna. What are the antenna adjustments? They are: make the front surface flat, be sure the feed looks at the center of the dish, and set the proper focal length. You must also be pointed at the satellite and have the feedhorn skew properly adjusted. Many of the adjustments are done without any measurement of the signal, and in fact require no signal at all. The adjustment of making the front surface flat, adjusting the focal length, and aligning the feed will be done without signal. You will use the strings and the back braces to make the dish flat, a focal finder and measure tape to align the feedhorn to find center, and set the focal length using a measure tape to measure from dish to feedhorn. You will use a satellite tool to locate signal in further steps of fine tuning. We feel that you must use strings to assure the front of the dish is flat. The strings must be taut and run from brace to the opposite brace at 180 degrees. A dish with 8 braces needs four strings. Do all adjustments with the braces loose. The strings must touch at the center, if they do not, sight the dish from the side to see which braces should be slightly adjusted to make the front surface of the antenna perfectly flat. CAUTION: do not over tighten the 8 bolts that hold the dish to the ring as they can distort the dish. The easiest way to assure yourself that the feedhorn is looking directly at the center of the antenna is to use a Focal Finder (SEE PHOTO “A” BELOW) or to make a tool to assist in finding the center of the antenna. You can if no focal finder is available, cut a 1” X 4” board to the length of the antenna’s focal length. Held vertically against the feed it should point at the center of the antenna, this will be true at the horizontal plane as well. DH recommends using an AI Turbo S2 made by Applied Instruments or another tool such as a spectrum analyzer to locate your satellite signal in order to complete the following steps: Setting the Azimuth: To set the azimuth of the system you will use the base can and a tool to locate and measure signal. Find a satellite signal using the AI Turbo S2 or another satellite tool that will show signal spiking. Any signal strength will work. This is your reference point. Now you will go from bad signal to bad signal. From this reference point you will move the antenna left of the reference point to see if the signal gets better or worse and right of the reference point to see if this makes it better or worse. When you see the location of the base can for the best signal, you will tighten down the set screws on the base can. (Special Note: It is best to make a mark on the pole and base can to reference your starting point before making any moves with the base can. Re‐mark your base can and pole so that you now know the location that is allowing the strongest satellite signal.) Setting the Elevation The fine tune adjustment for the elevation of the AZ‐EL Mount is very simple to operate. First elevate the antenna to the satellite and lock the elevation rod down. Tighten the U‐bolt on the tube and loosen the bolts on the bracket that hold the tube. The tube now can be moved up and down by loosening and tightening the nuts on either side of the bracket. You can make very small adjustments with this bracket, thus optimizing your signal. Skewing the feedhorn: You will rotate the feedhorn; again going from left or right of the marked reference location for your feedhorn, to find your strongest signal. Once you find your strongest signal tighten down into place. Keep in mind when you are making these last “Additional Fine Tuning Techniques” very small moves will be needed to make the best improvements in signal strength. ...
- Page 19 BOLT BAG FOR: 48” AZ-EL MOUNT C14F feed Assembly Feedhorn to Collar & LNB Ku4FL: 3PC Heavy Duty Feed Struts 1- Set of 4 Struts 3-1/4” x 3/4" Bolts ADD TO C14F C14F or C24 1- Collar (C, Ku) 3-1/4" Lock Washers...
- Page 20 MISSING PARTS WARRANTY You have obtained one of the best antennas on the market today! We hope that you will be happy with your new DH Antenna. To better acquaint you with our system, we ask that you read the instruction manual and verify that all of the equipment has been supplied in your shipment.
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